"""Peewee migrations -- 001_auto.py.

Some examples (model - class or model name)::

    > Model = migrator.orm['table_name']            # Return model in current state by name
    > Model = migrator.ModelClass                   # Return model in current state by name

    > migrator.sql(sql)                             # Run custom SQL
    > migrator.python(func, *args, **kwargs)        # Run python code
    > migrator.create_model(Model)                  # Create a model (could be used as decorator)
    > migrator.remove_model(model, cascade=True)    # Remove a model
    > migrator.add_fields(model, **fields)          # Add fields to a model
    > migrator.change_fields(model, **fields)       # Change fields
    > migrator.remove_fields(model, *field_names, cascade=True)
    > migrator.rename_field(model, old_field_name, new_field_name)
    > migrator.rename_table(model, new_table_name)
    > migrator.add_index(model, *col_names, unique=False)
    > migrator.drop_index(model, *col_names)
    > migrator.add_not_null(model, *field_names)
    > migrator.drop_not_null(model, *field_names)
    > migrator.add_default(model, field_name, default)

"""

import peewee as pw
from peewee_migrate import Migrator
from decimal import ROUND_HALF_EVEN

try:
    import playhouse.postgres_ext as pw_pext
except ImportError:
    pass

SQL = pw.SQL


def migrate(migrator: Migrator, database: pw.Database, *, fake=False):
    """Write your migrations here."""
    
    @migrator.create_model
    class Advices(pw.Model):
        id = pw.AutoField()
        create_at = pw.DateTimeField()
        update_at = pw.DateTimeField()
        user_id = pw.CharField(max_length=128)
        content = pw.TextField()
        status = pw.SmallIntegerField(constraints=[SQL("DEFAULT 1")], default=1)

        class Meta:
            table_name = "advices"

    @migrator.create_model
    class DemoTable(pw.Model):
        id = pw.AutoField()
        create_at = pw.DateTimeField()
        update_at = pw.DateTimeField()
        name = pw.CharField(constraints=[SQL("DEFAULT ''")], default='', max_length=128)
        age = pw.IntegerField()
        user_id = pw.BigIntegerField()
        desc = pw.TextField()
        status = pw.SmallIntegerField(constraints=[SQL("DEFAULT 0")], default=0)
        sex = pw.BooleanField(constraints=[SQL("DEFAULT 0")], default=0)

        class Meta:
            table_name = "demo_table"

    @migrator.create_model
    class Text(pw.Model):
        id = pw.AutoField()
        create_at = pw.DateTimeField()
        update_at = pw.DateTimeField()
        user_id = pw.CharField(max_length=128)
        content = pw.TextField()

        class Meta:
            table_name = "text"

    @migrator.create_model
    class User(pw.Model):
        id = pw.AutoField()
        create_at = pw.DateTimeField()
        update_at = pw.DateTimeField()
        user_id = pw.CharField(max_length=128, unique=True)
        user_name = pw.CharField(max_length=128, unique=True)
        password_hash = pw.CharField(max_length=128)
        content_count = pw.IntegerField(constraints=[SQL("DEFAULT 0")], default=0)
        word_count = pw.BigIntegerField(constraints=[SQL("DEFAULT 0")], default=0)
        status = pw.SmallIntegerField(constraints=[SQL("DEFAULT 1")], default=1)

        class Meta:
            table_name = "user"

    @migrator.create_model
    class Version(pw.Model):
        id = pw.AutoField()
        create_at = pw.DateTimeField()
        update_at = pw.DateTimeField()
        version_number = pw.CharField(max_length=255)
        release_date = pw.DateField()
        update_content = pw.TextField()

        class Meta:
            table_name = "version"

    @migrator.create_model
    class VersionReachUser(pw.Model):
        id = pw.AutoField()
        create_at = pw.DateTimeField()
        update_at = pw.DateTimeField()
        version_id = pw.IntegerField()
        user_id = pw.CharField(max_length=128)

        class Meta:
            table_name = "version_reach_user"


def rollback(migrator: Migrator, database: pw.Database, *, fake=False):
    """Write your rollback migrations here."""
    
    migrator.remove_model('version_reach_user')

    migrator.remove_model('version')

    migrator.remove_model('user')

    migrator.remove_model('text')

    migrator.remove_model('demo_table')

    migrator.remove_model('advices')
